PRICOP, V., and S. PORT. “THE COMMON HILBERT SERIES FOR SOME DIFFERENTIAL SYSTEMS WITH HOMOGENEOUS NONLINEARITIES OF ODD DEGREE”. Acta Et Commentationes Exact and Natural Sciences, Vol. 6, no. 2, Dec. 2018, pp. 60-69, doi:10.36120/2587-3644.v6i2.60-69.